To provide a high-frequency thermal therapy apparatus capable of preventing leakage radio waves generated from an electrode from diffusing to the surroundings and adversely affecting electronic equipment and a human body.A high-frequency thermotherapy apparatus 1 includes a bed 10 on which a patient can be placed, a gantry 30 having an opening 31a through which the bed 10 can be inserted and withdrawn, a pair of disk electrodes 37 supported by the gantry 30 across the opening 31a , 47. A high frequency electric power is applied between the pair of disc electrodes 37, 47 to thermally treat the affected part 101 by dielectric heating, and the entire bed 10 is covered in a dome shape and the disc electrodes 37, 47 And a shielding member 70 for shielding leaked radio waves from the shielding member 70.(FIG.【課題】電極から発生する漏洩電波が周囲に拡散して電子機器や人体へ悪影響を及ぼすことを防止できる高周波温熱治療装置を提供する。【解決手段】高周波温熱治療装置1は、患者を乗せる寝台10と、寝台10を出し入れ可能な開口部31aを有するガントリ30と、開口部31aを挟んでガントリ30に支持される一対の円盤電極37,47と、を備え、一対の円盤電極37,47間に高周波電力を印加し、誘電加熱によって患部101を温熱治療するものであって、寝台10全体をドーム状に覆って円盤電極37,47からの漏洩電波を遮蔽する遮蔽部材70を備えている。【選択図】図4
